Momentary switches typically have two connection terminals, one for normally closed (NC) and the other for normally open (NO). When the button is not pressed, the NC connection is a closed circuit, and the NO connection is an open circuit. When the button is pressed, the NC connection becomes an open circuit, and the NO connection becomes a closed circuit. In addition to these, there are various other circuit connection methods to meet different application requirements.

The momentary toggle switch combines the characteristics of a toggle switch and a momentary switch, controlling the circuit connection with the forward and backward movement of the lever. There are several types of toggle switches based on their functions. The most basic type is the ON-OFF toggle switch, which can switch the circuit from an open state to a closed state. The ON OFF ON toggle switch can switch between two different circuit states. The ON-ON toggle switch can switch the circuit from one state to another. In addition, there is also an ON-OFF momentary switch, which switches the circuit from an open state to a closed state when the button is pressed, and returns to the original state when the button is released. The 1122 toggle switch is an ON-OFF ON switch, which can switch between two circuits and automatically reset. This product is also known as a toggle switch, a 3-pin toggle switch, a momentary toggle switch, also a 3-position toggle switch.

2.High-current on off on toggle switch

1122 is a high-current switch mainly used to control the on/off state of high-current circuits, commonly used in power systems, industrial automation, and mechanical equipment fields. Its main features are as follows:

Strong carrying capacity: The high-current switch can withstand high current loads, usually able to carry tens to hundreds of amperes of current.

High mechanical strength: The high-current switch usually has a metal shell and mechanical structure, with high mechanical strength and durability, able to withstand long-term use and harsh working environments.

High safety: The high-current switch usually has overload, short-circuit, and overheating protection mechanisms, ensuring the safe operation of circuits and equipment.

Various control methods: The high-current switch has various control methods, including manual control, remote control, automatic control, etc., to meet the needs of different application scenarios.

Wide range of applications: The high-current switch is suitable for circuits and equipment of different voltage levels, powers, and fields, such as transformers, motors, generators, transmission and distribution lines, etc.

This switch has screw feet, which can be fixed on the circuit board by screws and can be easily replaced, disassembled, and maintained as needed. It has the advantages of easy installation and high reliability. The advantage of screw feet is that they are firmly connected, replaceable, and detachable, suitable for applications that require reliable connection and easy replacement.

1122 3pin on off on toggle switch

3.The internal structure of the on off on toggle switch

A toggle switch is an electronic switch that usually consists of the following components:

Housing: Typically made of plastic or metal, it protects the internal components and enhances mechanical strength and durability.

Lever: The lever is usually made of metal and is used to manually connect and disconnect the circuit by toggling it.

Contacts: The contacts are usually made of metal materials such as copper or silver and are used to connect and disconnect the circuit.

A spring:usually made of metal, is used to control the connection and disconnection of the contacts in a toggle switch.

A fixing component:usually made of plastic or metal, is used to fix the lever and contacts of the switch.

Terminals:usually made of metal materials, are used to connect the switch and circuit.

1122 3pin on off on toggle switch

4.Suitable material for on off on toggle switch

For high-current applications, electric wood (also known as electrical insulating laminates) is commonly used. This material is typically composed of wood fibers and epoxy resin, and has excellent electrical insulation properties, making it suitable for insulation and isolation of electrical equipment, with a high melting point of over 400 degrees Celsius. It is often used in conjunction with brass.

Electric wood has the following characteristics:

Excellent electrical insulation properties: It can maintain stable electrical insulation properties under high voltage and high temperature conditions and is not easily prone to breakdown or discharge.

Good mechanical properties: It can withstand certain mechanical loads and vibrations.

High temperature resistance: It can work for a long time in high temperature environments.

Corrosion resistance: It is not easily corroded by chemicals such as acids,oil, and water.

Good processability: It can be processed by cutting, drilling, punching, grinding, etc. to meet different shape and size requirements.

Brass is a material with excellent conductivity, usually composed of high-purity copper and a small amount of additives. The added grease is usually an organic substance, such as wax or oil, which can improve the lubricity and corrosion resistance of the surface of copper, thereby improving the processability and service life of brass.

Brass has the following characteristics:

Excellent conductivity: It can be used for conductive connections in electrical equipment and electronic devices.

Good processability: It can be processed by forging, stretching, cold drawing, cutting, etc. to meet different shape and size requirements.

Corrosion resistance: The added grease can improve the corrosion resistance of brass, making it suitable for long-term use in humid and corrosive environments.

Good lubrication: The added grease can improve the lubricity of brass, reduce friction and wear, and thereby improve the service life of brass.

Low cost: Compared with other high-purity copper materials, the manufacturing cost of brass is relatively low, which can meet some low-cost application requirements.

If the current is small and the price is low, plastic materials can also be used. Higher quality plastics have melting points of over 100 degrees Celsius and, when used with brass, can also meet customer requirements well.

5.how to wire a on off on toggle switch

When connecting 3 pin toggle switch，the positive electrode is connected to the  C. One light wire is connected to the NC (normally closed)  and the other light wire is connected to the NO (normally open) .The two lamp wires are connected to the negative power terminal.

In the ON-OFF-ON type switch, when switched to the middle position, the left and right contactors are disconnected, so both lights are off. When you switch to the left or right position, the corresponding light will light up.

The switch manages two circuits, with a middle OFF stop, the two circuits can be closed at the same time, the pin in the same vertical row is in series, and the pin in the same horizontal row is in parallel

6.The range of use of the on off on toggle switch

3 pin Toggle switches with high current ratings are usually used to control high-current circuits and have a wide range of applications, including but not limited to the following areas:

Power systems: on off on toggle switch can be used as high-voltage switches, isolation switches, load switches, etc. in power systems, to control the switching and breaking of power equipment and power lines.

Industrial automation: 1122 toggle switch can be used for mechanical equipment control, motor start-stop, frequency converter control, etc. in industrial automation, to control the switching and control of high-power motors and devices.

Railway transportation: on off on momentary toggle switch can be used for signal control, turnout control, motor start-stop, etc. in railway transportation, to control the switching and control of railway signals and electromechanical equipment.

Marine and shipbuilding: toggle switches can be used for power control, rudder control, pump station control, etc. in marine and shipbuilding, to control the switching and control of high-power motors, pump stations, and rudders.

They are also suitable for circuit control and switch control in areas such as automobiles, trucks, boats, yachts, DIY projects, and household appliances.

In general, high-current toggle switches can be used in occasions where high-power circuits need to be controlled. They have the characteristics of strong load-bearing capacity, high mechanical strength, safety and reliability, and diverse control methods, and are suitable for various fields and occasions.